Toilet small water leak

I had a small leak under the restroom sink that would run out from under the cabinet and wet the rug at the toilet, depending on how level the camper was. I did redo one PEX tee connection (there's a lot of PEX tees under the sink to leak that are hard to get to). I increased the pressure regulator from 30 to 40 psi, to see if it would leak worse, but it hasn't leaked again. So, I keep the pressure at 40 psi now.